/jp/ - Otaku Culture

>>19505615
1. The fanbase is participatory and the world is open-ended (no plot finale, a broad time frame, etc.). You can follow a pattern to create an OC and original events with her.
2. There is a ton of content in different media and endless discussion. You can immerse yourself in the fandom.

These two traits are found in a lot of obsessive fandoms that have the most prominent insane fans in the West, like Sonic, horses, Harry Potter, Homestuck... You can probably think of more. As for "I want to be a girl" weebs, there are things that must attract them specifically.

3. The visual aesthetics are particularly cute.
4. The characters generally do not engage in masculine activities. Although there is a lot of conflict and combat, it is elegant (pic related). If you want to be little girl, you probably wouldn't self-insert in a franchise with more visceral fights even if it were very girl-centric.
5. No males.
6. Plenty of girl-on-girl non-explicit lewds as a result. Unlike outright porn, non-explicit lewds can serve as a sort of background noise for the whole fandom, keeping the fans constantly stimulated with their cuteness and lewdness.

I think the really interesting question is whether over time traits 3-6 create weebs who want to be a little girl out of regular weebs.
>[why] not another obscure japanese franchise ?
This is a misleading question, because in Japan Touhou is the opposite of obscure. For perspective, Japanese Akinator guesses Reimu in 10 questions.